From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/gpu/drm/nouveau/nouveau_platform.c | 224 +++------------------- 1 file changed, 26 insertions(+), 198 deletions(-) (limited to 'kernel/drivers/gpu/drm/nouveau/nouveau_platform.c') diff --git a/kernel/drivers/gpu/drm/nouveau/nouveau_platform.c b/kernel/drivers/gpu/drm/nouveau/nouveau_platform.c index 775277f1e..35ecc0d04 100644 --- a/kernel/drivers/gpu/drm/nouveau/nouveau_platform.c +++ b/kernel/drivers/gpu/drm/nouveau/nouveau_platform.c @@ -19,223 +19,51 @@ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "nouveau_drm.h" #include "nouveau_platform.h" -static int nouveau_platform_power_up(struct nouveau_platform_gpu *gpu) -{ - int err; - - err = regulator_enable(gpu->vdd); - if (err) - goto err_power; - - err = clk_prepare_enable(gpu->clk); - if (err) - goto err_clk; - err = clk_prepare_enable(gpu->clk_pwr); - if (err) - goto err_clk_pwr; - clk_set_rate(gpu->clk_pwr, 204000000); - udelay(10); - - reset_control_assert(gpu->rst); - udelay(10); - - err = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D); - if (err) - goto err_clamp; - udelay(10); - - reset_control_deassert(gpu->rst); - udelay(10); - - return 0; - -err_clamp: - clk_disable_unprepare(gpu->clk_pwr); -err_clk_pwr: - clk_disable_unprepare(gpu->clk); -err_clk: - regulator_disable(gpu->vdd); -err_power: - return err; -} - -static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) -{ - int err; - - reset_control_assert(gpu->rst); - udelay(10); - - clk_disable_unprepare(gpu->clk_pwr); - clk_disable_unprepare(gpu->clk); - udelay(10); - - err = regulator_disable(gpu->vdd); - if (err) - return err; - - return 0; -} - -static void nouveau_platform_probe_iommu(struct device *dev, - struct nouveau_platform_gpu *gpu) -{ - int err; - unsigned long pgsize_bitmap; - - mutex_init(&gpu->iommu.mutex); - - if (iommu_present(&platform_bus_type)) { - gpu->iommu.domain = iommu_domain_alloc(&platform_bus_type); - if (IS_ERR(gpu->iommu.domain)) - goto error; - - /* - * A IOMMU is only usable if it supports page sizes smaller - * or equal to the system's PAGE_SIZE, with a preference if - * both are equal. - */ - pgsize_bitmap = gpu->iommu.domain->ops->pgsize_bitmap; - if (pgsize_bitmap & PAGE_SIZE) { - gpu->iommu.pgshift = PAGE_SHIFT; - } else { - gpu->iommu.pgshift = fls(pgsize_bitmap & ~PAGE_MASK); - if (gpu->iommu.pgshift == 0) { - dev_warn(dev, "unsupported IOMMU page size\n"); - goto free_domain; - } - gpu->iommu.pgshift -= 1; - } - - err = iommu_attach_device(gpu->iommu.domain, dev); - if (err) - goto free_domain; - - err = nvkm_mm_init(&gpu->iommu._mm, 0, - (1ULL << 40) >> gpu->iommu.pgshift, 1); - if (err) - goto detach_device; - - gpu->iommu.mm = &gpu->iommu._mm; - } - - return; - -detach_device: - iommu_detach_device(gpu->iommu.domain, dev); - -free_domain: - iommu_domain_free(gpu->iommu.domain); - -error: - gpu->iommu.domain = NULL; - gpu->iommu.pgshift = 0; - dev_err(dev, "cannot initialize IOMMU MM\n"); -} - -static void nouveau_platform_remove_iommu(struct device *dev, - struct nouveau_platform_gpu *gpu) -{ - if (gpu->iommu.domain) { - nvkm_mm_fini(&gpu->iommu._mm); - iommu_detach_device(gpu->iommu.domain, dev); - iommu_domain_free(gpu->iommu.domain); - } -} - static int nouveau_platform_probe(struct platform_device *pdev) { - struct nouveau_platform_gpu *gpu; - struct nouveau_platform_device *device; + const struct nvkm_device_tegra_func *func; + struct nvkm_device *device = NULL; struct drm_device *drm; - int err; - - gpu = devm_kzalloc(&pdev->dev, sizeof(*gpu), GFP_KERNEL); - if (!gpu) - return -ENOMEM; - - gpu->vdd = devm_regulator_get(&pdev->dev, "vdd"); - if (IS_ERR(gpu->vdd)) - return PTR_ERR(gpu->vdd); - - gpu->rst = devm_reset_control_get(&pdev->dev, "gpu"); - if (IS_ERR(gpu->rst)) - return PTR_ERR(gpu->rst); - - gpu->clk = devm_clk_get(&pdev->dev, "gpu"); - if (IS_ERR(gpu->clk)) - return PTR_ERR(gpu->clk); - - gpu->clk_pwr = devm_clk_get(&pdev->dev, "pwr"); - if (IS_ERR(gpu->clk_pwr)) - return PTR_ERR(gpu->clk_pwr); + int ret; - nouveau_platform_probe_iommu(&pdev->dev, gpu); + func = of_device_get_match_data(&pdev->dev); - err = nouveau_platform_power_up(gpu); - if (err) - return err; + drm = nouveau_platform_device_create(func, pdev, &device); + if (IS_ERR(drm)) + return PTR_ERR(drm); - drm = nouveau_platform_device_create(pdev, &device); - if (IS_ERR(drm)) { - err = PTR_ERR(drm); - goto power_down; + ret = drm_dev_register(drm, 0); + if (ret < 0) { + drm_dev_unref(drm); + return ret; } - device->gpu = gpu; - device->gpu_speedo = tegra_sku_info.gpu_speedo_value; - - err = drm_dev_register(drm, 0); - if (err < 0) - goto err_unref; - return 0; - -err_unref: - drm_dev_unref(drm); - -power_down: - nouveau_platform_power_down(gpu); - nouveau_platform_remove_iommu(&pdev->dev, gpu); - - return err; } static int nouveau_platform_remove(struct platform_device *pdev) { - struct drm_device *drm_dev = platform_get_drvdata(pdev); - struct nouveau_drm *drm = nouveau_drm(drm_dev); - struct nvkm_device *device = nvxx_device(&drm->device); - struct nouveau_platform_gpu *gpu = nv_device_to_platform(device)->gpu; - int err; - - nouveau_drm_device_remove(drm_dev); - - err = nouveau_platform_power_down(gpu); - - nouveau_platform_remove_iommu(&pdev->dev, gpu); - - return err; + struct drm_device *dev = platform_get_drvdata(pdev); + nouveau_drm_device_remove(dev); + return 0; } #if IS_ENABLED(CONFIG_OF) +static const struct nvkm_device_tegra_func gk20a_platform_data = { + .iommu_bit = 34, +}; + static const struct of_device_id nouveau_platform_match[] = { - { .compatible = "nvidia,gk20a" }, + { + .compatible = "nvidia,gk20a", + .data = &gk20a_platform_data, + }, + { + .compatible = "nvidia,gm20b", + .data = &gk20a_platform_data, + }, { } }; -- cgit 1.2.3-korg